The words “she was careful now” indicates heidi has become more

It indicates that she is more responsible now and analyzes her options better because she is careful.

the maximum speed limit is 55 mph on a two-lane undivided highway and for vehicles towing trailers.

for this, you need to remember something significant in your own life, for example, if you were bullied when you were younger, you can mention your memories on this and touch on how such treatment can harm other kids your age either physically or mentally. (racism, car crashes, a parent in the hospital are all very good subjects, think hard on it! )

hope i ! : )